Yes I know it's a silly nit. 
However, it's a good practice to stick to. For example if you have a module called "audio" and inside it a function called "start" then it's better to do:
```
import audio
...many many lines later...
audio.start()
```
The only time I do `from somemodule import function_or_something` is when I know I'm going to be using it a lot. Like, you don't want to have to write 
```
    res = self.client.get(url)
    nose.tools.eq_(res.status_code, 200)
    nose.tools.ok_('somethign' in response.content)
    nose.tools.ok_('else' in response.content)
```